Electrical connecter



Nov. 1, 1927. 1,647,697

W. F. HESSEL ELECTRICAL CONNECTER Filed NOV. 24. 1919 f? /Ay/E/V TOI? 2WMM/M Patented Nov. l., 1927.

WILLIAM F. HESSEL, OF NEW YORK, N. Y.,

PATENT OFFICE.

.ASSIGNOR T W. F. HESSEL COMPANY, IN-

CORPORATED-OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

' ELECTRICAL coNNEcTER.

f This invention relates in general to electrical connecters, and moreparticularly t0 an electrical coniiecter of the type described in myUnited States Patent No. 1,296,801, dated March 11th, 1919, suchconecters being designed to withstand hard usage and maintain a highdegree of insulation.

The objects ofthe Iinvention are to provide a device of the characterdescribed embodying novel features of construction which will withstandrough `handling and hard usage without damage thereto; to provide anelectrical connecter which will not easily get out of repair and whichwill ensure safety; to secure a device of this character which possessesand willl maintain a high degree of insulation; to providean electricalcon- `erence indicate the same necter which is simple and inexpensive inits construction, which can be easily and quickly assembled or takenapart and which embodies a minimum number of parts and fasteningmembers; and to obtain other objects and results as may be brought outby the following description.

Referring to the accompanying drawings which illustrate one embodimentof my invention, and in which like numerals ofrefparts throughout theseveral views:

Figure 1 is a top plan view of an electrical connecter embodying myinvention,

Figure 2 is a plan view of the connecter box and insulating block, withthe cover Plate and plug removed,

Figure 3 is a side elevation of the device;

Figure .4 is a vertical sectional view on the line 4-4 of Figure 2;

Figure 5 is a similar view on the line 5-5 of Figure 2, portions of theplug beingbroken away, and

igure 6 is a detached perspective view of the insulating block.

Specifically describing tlie present embodiment of the invention, thenumeral 1 designates, the base of the device, which is shown in the formof a box constructed ot any suitable material to withstand hard usage,preferably heavy sheet metal. This box 1 is shown as formed of a singleblank of sheet material with sides 2 and ends 3 integral-with the bottom4 thereof, the ends ofthe sides 2 being bent inwardly at 2 and rivetedat 5 to the inner faces of the ends 3. At one vend of the box 1,the'bottom, sides and end thereof are provided with knock-out portions 6formed by pressing the walls of the box to weaken the same, any one ot'said knock-out portions being adapted to be struck out of the box by ahammer or the like, to provide an opening 8 t0 60 receive the line wires9 and 10, according to 'he position of the box witn respect to the linewires. The bottom 4 of the box is'provided with a plural-ity of holes 4Lto receive screws or bolts for Wall or the like if desired.

An insulating block llis fitted' within said box, one end of the blockengaging one end wall of the box between the inturned ends 2 of thesides 2. formed of any suitable insulating material and comprisessuperposed sections 12 and 13, fastened together by countcrsunk screws14 accessible from the top vof the block. The

upper side of the end of thu upper section 12 of the block 11 adjacentthe end of the box is slightly raised above the topedges of the box asat 15 to form a transverse shoulder 16, the remaining portion of theblock being of substantially. the same height as J the sides. and endsof the box.

A flanged cover plate17 closes the top of the box l, one end and the topof said cover plate being cut away at 18 to tit snugly around the raisedportion 15 of the upper side of the 85 block, the. edges of said cutawayportion engaging the shoulder 16on the block 11 and the top of coverplate resting snugly over that portion of the top of the block 11 iushThe cover lating block is held firmly in position with- I in the box.The inturned ends 2l of the sides of the box serve toposition the ,blockin the box and the edges of the cutaway portion of the cover plateengaging the raised portion 15 of the upper section ofthe ill-3400sulating block and shoulder 16 prevent all movement of the block'in anydirection.

The meeting faces of the two sections 12 and'13 of the .insulatingblockare formed with eomplemental longitudinally extending 10.5

parallel grooves 20 and 21, which form openmgs to receive Va pair ofspaced bus bars 22 secured to the lower section 13 ofthe insu` latingblock by screws 23. One end of each of sald bus bars is provided with abinding fastening the box to a. 65

This insulating block is 70 screw 24, to each of which4 screws isconnected one of the line wires 9, 10. The line wires 9 and 10 are leadto the bus bars through bars is formed with a transverse opening 25registering with a corresponding open;

ing 26 in the uppersection 12 of the insulatlng block. These openingsare adapted to receive the connecting conductor pins 27.

and 28 of an electrical connecting plug 29,

c whereby electrical connection is made beis provided through the end ofthe section htween said bus barsV and an extension o'r branch line 30. 4

The plugl29 is formed in three sections,

29", 29b and 29c of suitable insulating mate-4 rial, the connecting endsection 29 carrying the connecting pins 27 and 28, and being secured tothe intermediate section 29" by means of the screw 31. The section 29 isprovidedv with a cavity 33 to receive a conventional cartridge fuse 34connected with one of the conductor pins, in the .present instance, thepin 27. This fuse 34 and the connecting pin 28 are engaged by springsockets x35 and 36 'carried by the intermediate section 29b of the plug,said sockets being provided with binding screws 37 to which are securedthe terminals of the branch or extension line 30. The section29 of the.plug is hollowed out to receive and house these binding'screws. 37 andwires, and is fastened to the -intermediate section 29h by meansof thescrews 38. An' opening 39 29c to receive the branch wire andpermit itsconnection'with the binding screws-37.

It will be noted that all electrical connections within the box 1 arehoused by the insulating block 11 so that there' is .no danger of shortcircuits or accidental shocks. lhere is no metallic connectionbetweenthe insu` lating block and the box 1 or its cover ,platey 17,such as screws or bolts, the' insulating ,block being held irmly linposition in the box by means of the cover plate 17. The block 1l isclamped betweenthe cover and bottom vof the box and lateral orlongitudinal movement of the block is prevented by the edges of thecut-away portion 18 vof the cover plate engaging the raised portion 16of the insulatingblock.` There is nov conducting member interposedbetween the plug 29 and the insulating block, so that the only possiblevelectrical connection is between the pins 27 and 28, and the bus bars.With the above construction, it will be seen that reby merely removingthe cover plate 17, and

when inserting the block in the box, the inturned ends 2 of the sides2and the edges of the cut-away portion 18 engaging the raised portion 15of the block serve to quickly and accurately position the block. The

bottom of the box is of anextended area land flat so that it will liesteadily on a support and assume an upright position with the attachedplug so 'as toeliminate the necessity of fastening the box to a support.This construction also allgws the box to be transported from place toplace and a quick positoning thereof when the device is set down.

Obviously, many detail modifications and changescan be made inJtheconstruction of m -invention by those skilled in the art withoutdeparting from the spirit Vand scope of the invention, and I do notdesire to be understood as limiting myself except as required bytheufollowingA claims when construed in the light of the prior art.

Having thus described my invention what l claim as new herein and desireto secure by. Letters Patent is:

1. In a device of the character described, a sheet metal box having itsside' and end walls integral with the bottom wall thereof, and havingthe end portions of the side walls bent inwardly and secured to the endwalls of the box so as to form shoulders on said walls, a block ofinsulating material lplaced into said box and having only one of itsside faces in contact with `the walls of' the said box, said face ot theblock being arranged to tit snugly between the said shoulders formed onan end wall of the box and a cover for said box, said cover beingarranged to engage the said block and to retainthe same 1n position.

. 2. In a device of the character described, a box, a block ofinsulating material, said block being in contact with only one of theside walls of said box, means on the said side wall for engaging'saidblock and preventing lateral movement thereof, and a cover for said boxfor receiving said block within said side wall ofthe box.

usf.

WILLIAM F. HE'ssEL.

